Pricing
Most of SysDesAi is free. The AI architect runs on credits — but there are multiple ways to use it without paying anything.
Free Forever
No sign-up required for most features. No credit card. No trial period.
- Software Architecture Academy (11 modules, 60+ lessons)
- Design Gallery with 48+ architecture walkthroughs
- Curated engineering news feed from 35+ blogs
- Discussions forum & threaded comments
- Architect profiles & directory
- Leaderboard & reputation system
- Activity feed & notifications
- Completion certificate for the course
Bring Your Own Key
FreeProvide your own Google Gemini API key and use the AI architect for free — unlimited designs, unlimited chat, zero credit cost.
Your key is stored only in your browser and never logged or stored on our servers. It is sent directly to Google from our server to generate your designs.
AI Architect Credits
Every new user starts with 50 free credits. Need more? Pick a pack below.
Starter
$5/ 50 credits
$0.10 per credit
- 10 Fast designs
- 2 Deep Thinking designs
- 50 Fast chat messages
Best value
Pro
$20/ 250 credits
$0.08 per credit — save 20%
- 50 Fast designs
- 10 Deep Thinking designs
- 250 Fast chat messages
Credit Cost Reference
| Action | Fast | Deep Thinking |
|---|---|---|
| Design step generation | 5 credits | 25 credits |
| Chat message | 1 credit | 5 credits |
| Fix broken diagram | Free (no credits) | |
How to Get Started
- Use your free credits — every new account gets 50 free credits, no payment required.
- Add your own API key — open the credits menu in the header, paste a Google Gemini API key, and use the AI architect for free with no limits. Your key is stored only in your browser.
- Purchase credits — if you prefer not to manage API keys, buy a credit pack from the credits menu. Packs start at $5 for 50 credits.
Have questions? Check the FAQ